Recently, there have been posts by builders who express surprise about common building errors or design changes that caught them unaware. Three examples are the infamous CH750 HomebuiltHelp Video TE  erroneous measurement method and the erroneous orientation of the mixer support bearings, and most recently, apparently a design change in the CH750 fuel tank with an extra opening that needs to be plugged if you're not using a fuel return line. 

I notice the "Open" Forum has "stickies" - posts that are permanently attached to the very top of the Discussions so they will alway be visible. It would be very simple for the administrator of the website to put a "stickie" at the top of the relevant forums to post announcements about design changes or common mistakes and how to either remedy or avoid them.

Apparently, the email address for the administrator of this site is admin@zenith.aero. I would encourage you to contact them if you think this is a good idea.

Regards,

John